Cushion connection for cantilever spring suspensions



Aug. 10, 1926. 1,595,671

F. L. LlPCOT CUSHION CONNECTION FOR CANTILEVER SPRING SUSPBNSIONS Filed Nov. 15. 1925 Sheets-Sheet 2 INVENTOR Patented .Aug., 10, 1926. I I

UNITED STATES PATENT? orrrcs.

, ram) 1., LIPCOT. or NEW YORK, N. Y., nssrenoa Tommi RUBBER "sHocK msuna'roa COMPANY, me, or NEW YORK, N. at, A CORPORATION or DELAWARE.

CUSHION CONNECTION FOR CANTILEVER' SPBING SUSPENSIONS.

Application filed November 13, 1923. Serial No. 674,463.

This invention relates to wholly non-mespring showing the improved connections tallic connections and supports interposed associated therewith and with the frame of a. 56 operatively between the cantilever spring chassis to effect a cantilever suspension. of a motor vehicle and the axle and chas- Figure 2 is a View in side elevation of the sis frame therefor. It has for its principarts shown in Figure 1, the axle being pal object to provide such non-metallic con indicated in section. nections and supports between one end of Figures 3, 5, and 7, show in verticle seca vehicle spring of suitable type and the tion. respectively, the connection at the axle, between the other end of the spring and front end of the spring, the connection at its 10 the chassis frame, and, at an intermediate mid-section, and the connection at the rear of the spring, a similar connection between end of the spring.

it and the chassis frame therefor affording Figure 4 is a view in transverse section a conventional cantilever suspension. A of the connection shown in Figure 3 taken further object of the invention is to provide on the plane indicated by the line 4.4i of non-metallic connections and supports at the Figure 3 and looking in the direction of the points referred to which shall be of such arrows. v

character as to alford the greatest possible Figure 6 is a View showing the underside degree of flexibility especially as regard of the spring and saddle as illustrated in canting of the spring without, however, Figure 5 and taken on the plane indicated making the construction less rugged or by the line 6-6 of Figure 1, the lower effective for its intended purpose. Still resilient block being omitted.

anothe object of th invention i to 1550- As the description proceeds it will be eviciate resilient nonmetallic connections with (l nt that the improved connections may be the vehicle spring and with the brake for the a ociated with the leaf springs of any type vehicle as to permit such resilient connecfor the purpose of providing a cantilever tion to u lement th pring in it ti suspension for a vehicle body. As illusof resisting yieldingly the braking str s trated in F1gures 1 and 2 such a leaf spring 30 In accordance with the invention it is pro- .(L'IS shown as provided to support the veposed, in the preferred form, to extend one 'lucle frame 7) from an axle c. 1t pro 30 d f th v hi l spring i t a h i posed in accordance wvlth the nvention to carried by the frame and engage this end of connect esp e' with the p epe ts th spring ith ili t t lli t without using any metal to metal contact 35 i l h as bb hi h i h ld ithi while actually increasing the resiliency of th h u i g i t di pl t, ith the suspension by the employment of yieldspect thereto; to extend the spring adja iug material at the points of connectron. cent its mid-section through another hous- HHS the P' the SPTmg ing which is also carried on the frame and (r is shown as extending througli an .open

connect it with the frame at this p i t; Sltlf wall in a metal housing (1 wh ch setrough blocks of non-metallic yielding macured to the frame I) and is formed inteterial such as rubber held within the housriorly with a seat Z to receive a block 6 ing and engaging the upper and lgwe ides ()l 1i()l1-I11i21lllC yielding material, preferof the spring; and, further, to con t, th ably rubber, which alsoseats on the end of h d f th spring i il l 1 th the spring a. flho housing may beclosed axle through a suitable housing carried y LE 1 Z 'h KS 11150 P 0- thereon which housing, may, in dditi vidcd with a seatil to retain another block support certain parts of the brake fittings so t matcrlel Winch i118" as to subject the vehicle spring and'itsyie1d gagged with, the end of the spring. It is 109 ing connections to the braking reactions. P 111011110 the Seats a S0 that The invention will be described in greater they converge towards the other end of the particularity with reference to theembodi- P 'J L y P 2" thel lelfllng m ments shown in the accompanying drawings, t rlul c. 0' under greater compression at the wherein: inner side than at the-outer side. A reso- Figure l is a view in plan of a vehicle lution of the internal stresses thereby setsaddle i.

up within the material indicates that the spring. a is under a constant drag tending to prevent itswithdrawal from the housing d. As shown in Figure 5 the spring a is extended through the slotted Walls of a housing f which is also secured to the frame 5. At its mid -section the spring may have its leaves united, as usual, by a through bolt g and further secured by a spring clip 71 having bolts h embracing the leaves at opposite sides and assing through a saddled for a purpose w 'ch is common. There 1s shown a plate is between the clip 71, and the top of the spring, this plate constituting in effect a shim whereby the parts may be as sembled readily in desired relation and standardization permitted, as will later apr pear. The housing f has provided therein a seat f for a block of yielding non-metallic material is which is also seated in a suitable recess if, provided therefor in the top surface of the clip ha The lower part of the housing is closed by which is provided with a seat 7' for another block l which is also seated in a recess 5' provided therefor in the under-surface of the The construction described provides for a wholly non-metallic connection and support between the mid-section of the spring. and the vehicle frame, the material employed being so engaged with the re spective parts as to be held positively against displacement with respect thereto. A degree of flexibility between the parts is afforded by the yielding material and it is proposed in accordance with the improvements vto increase this degree of flexibility by mechanical means found in spherical contours of the seats f, f for the respective blocks. By means of this spherical contour 'movement about the center line of the respective blocks in all planes is facilitated. Obviously, spherical surfaces may be provided elsewhere in the suspension for the same purpose. i

As shown in Figure 7 the rear end of the 1 spring extends into a housing m through its front wall which is open and is engaged with non-metallic yielding material e e metallic yiel ing material carried withfsaid formedin sections in the illustrated case and seated, respectively, in a seat 'm' formed in the 'housing'm and a seat n formed in a supporting'.-b'racket n for the housin which in turn is carried on the.axle c. hrough bolts 7) secure the housing to its support.

The seats m, n, converge towards the front end of the spring as described with to the seats at, d are placed under greater compression adjacent their forward edges thereby setting up internal stresses which tend to prevent the spring a from withdrawing from the housing m. All of the material nection with the parts described 6, a, 76', Z and 6 e is confined under compression for respect a detachable capi? so that the blocks e e employed in con mechanical and physical reasons. The support n is mounted loosely or fixedly on the axle c as may of adjacent parts and may have flanges n on which may b su ported part of,tho braking mechanism or the vehicle (not be dictated by the design illustrated) the relation of the' braking .action to the braking stresses is found largely in the frame but the conjoint action of the vehicle frame and the 'non-metallio yielding material associated therewith is such as to cuhsion the retarding movement of the car occasioned and largely absorb them.

The construction described affords a canby braking stresses tilever suspension of conventional type in so far as concerns the mechanical attributes while embodying therein many advantages incidental to the yielding and cushioning properties of the connections and supports.

Changes and rearrangements within the skill of amechanic maybe made without departing from the spirit of the invention so long as the desired results are secured by equivalent means. 7

What I claim is: 1. In combination with a vehicle frame, spring and axle, a housing into which the front end of the spring extends carried with the frame," blocks of non-metallic yieldin material supported within saidhousing an engaged with the spring, a second housing secured to the frame adjacent the mid-section of the spring and through which the spring extends, blocks of non-metallic yielding material carried in said secondnamed housing and engaged with the up er and 'ower sides of the spring, a third ousing carried on the axle into which the rear end of the sprin extends, and'blocks of nonhousing and the spring, verging toward the center of the spring and carrying the respective blocks, and means engaged with the rear end of seats in said end housings con-" associated with all of said housings to place said blocks under compression.

2. In combination with ing into which the end of the spring extends, a wholly non-metallic connection and support interposed between theendof the spring and the housing and comprising nonmetallic yielding material engaged with the a spring, a hous- End of the spring, and seats formed in the ousing for the material to hold it against dis lacement with respect to the housing, sai

seats being formed in converging relationship to set up internal stresses within the material tending to draw the spring in the housing.

3. In a cantilever suspension for springs, a connection between the mid-section thereof and the frame of the vehicle including blocks of nonmetallic yielding material enwith the upper and lower sides of the spring and a housing through which the spring extends carried with the frame and having seats for said blocks, and means included within said connection for increasing the capacity for universal movement of the spring in the housing.

4. in a. cantilever suspension'for vehicles, aconnection between the mid-section of the spring and the frame including blocks of non-metallic yielding material engaged with the upper and lower sides of the spring, a housing carried with the frame and through which the spring extends, spherical seats ,which the spring extends,

within the housing to receive the blocks and hold them against displacement with respect to the housing, and means to hold the blocks on the spring against displacement.

5. Ina cantilever suspension for vehicles, a connection between the mid-section of the spring and the frame including blocks of non-metallic yielding material engaged with the upper and lower sides of the spring, a housing carried with the frame and through spherical seats within the housing to receive the blocks an hold them against displacement with respect to the housing, a spring clip for the leaves of the spring anchored by a saddle and seats formed in the saddle and in theclip to engage the blocks and holdthem against displacement with respect to the housing,

This specification signed this 10th day of November, A. D. 1923.

FRED L. LIPCOT. 

